Add pwsh.exe to list of suspicious Windows tools

[connorcarnes]

PowerShell versions 6 and above use the executable pwsh.exe instead of powershell.exe:

• First introduced in PowerShell 6
• Also used in PowerShell 7

pwsh.exe doesn't come installed by default like powershell.exe but I thought it may still be worth adding to the list of "Suspicious Windows tools" in the NetworkConnect rule group.